Time-Variant Reliability Analysis of FPSO Hull Girder Considering Corrosion Based on Statistics
张道坤 唐文勇 张圣坤
State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200030, China
Time-Variant Reliability Analysis of FPSO Hull Girder Considering Corrosion Based on Statistics
ZHANG Dao-kun , TANG Wen-yong and ZHANG Sheng-kun (State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200030, China)
Abstract:
FPSO is a kind of important exploitation platform used in ocean oil and gas industry, which has the unique character of mooring at outsea for a long time. Since it can not be inspected and maintained thoronghly at dock like other kinds of ships, the reliability of FPSO hull girder during the whole service should be focused. Based on latest corrosion database and rational corrosion model, the ultimate strength of one FPSO is calculated under the conditions of slight, moderate and severe corrosion. The results not only provide the reliabihty under different corrosion conditions, but also do well for further inspection and maintenance research. The results provide necessary foundation for deciding inspection intervals and maintenance measure, which has practical sense to improve the general safety level of ocean engineering.[著者文摘]
Key words:
FPSO ; corrosion; time-variant reliability analysis
基金资助:
This research was financially supported by the National Natural Science Foundation of China (Grant No. 50323004)

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